November 14, 2007
What is Light?
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Light is any wavelength of electromagnetic radiation, though the word is commonly used to refer to the visible light spectrum. The human eye typically perceives electromagnetic wavelengths between 400 and 700 nanometers, interpreting them as a range of colors from red to violet. Light is understood to exhibit both particle and wave properties, and the fundamental particle, or quantum, of light is called the photon. Who received the Nobel Prize in 1921 for his work on this wave-particle duality?
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